Here is a shot of Irene’s taken yesterday
Versus how it used to look as the Short Stop
The exterior doesn’t look like the fluting is original, it reminds me of the replacement material used on Mel’s diner, the former Lincoln diner of Lebanon, PA.
The former Short Stop diner was also known as the Time Out Diner. It’s a 1950s kullman dinette.
Other similar models include the:
White Crystal, which has a reversed floorplan, with the corner door on the right, and the White Rose System of Linden, New Jersey.
Both of those diners, however, have canted corners, identifying them as later models. Irene’s is an earlier kullman, with flat vertical sections, and a four window front facade, instead of a five window. Earlier model Kullman dinettes retained the corner door, but had rounded windows.
Diner Hunter 
The Short Stop Diner in Wheaton, MD, was a great place for breakfast. They made a Gyro Omelet with onion that was a real winner. Awesome home fries with a touch of garlic and oregano.
Wheaton still has Nick’s Diner at the intersection of University Blvd and Viers Mill Rd, but I sure do miss the Short Stop.
Nicks’ is a nice place. Unfortunately I don’t have pictures of it saved to my computer or I’d post it. Looks to me like it was converted from an old gas station. Can anybody confirm that?